45158388 has 48 divisors (see below), whose sum is σ = 115421376. Its totient is φ = 13628160.

The previous prime is 45158371. The next prime is 45158411. The reversal of 45158388 is 88385154.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40770 + ... + 41862.

It is an arithmetic number, because the mean of its divisors is an integer number (2404612).

Almost surely, 2^45158388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45158388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57710688).

45158388 is an abundant number, since it is smaller than the sum of its proper divisors (70262988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45158388 is a wasteful number, since it uses less digits than its factorization.

45158388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424 (or 1422 counting only the distinct ones).

The product of its digits is 153600, while the sum is 42.

The square root of 45158388 is about 6719.9991071428. Note that the first 3 decimals coincide. The cubic root of 45158388 is about 356.1061523278.

The spelling of 45158388 in words is "forty-five million, one hundred fifty-eight thousand, three hundred eighty-eight".